Evolution of double-eye wall hurricanes and emergence of complex tripolar end states in moist-convective rotating shallow water model

Autor:	Masoud Rostami, Vladimir Zeitlin
Rok vydání:	2022
Předmět:	Fluid Flow and Transfer Processes Mechanics of Materials Mechanical Engineering Computational Mechanics Condensed Matter Physics
Zdroj:	Physics of Fluids. 34:066602
ISSN:	1089-7666 1070-6631
Popis:	A detailed investigation of linear instabilities of double-eyewall hurricane-like vortices with double maxima (“walls”) of azimuthal velocity and vorticity around the central minimum (“eye”) and of their nonlinear saturation is carried out in the framework of the moist-convective rotating shallow water model. It is shown that developing barotropic instability leads to inward displacement and gradual disappearance of the inner wall and to the formation of a nontrivial tripolar quasi-stationary structure, provided the second, outer, wall of the initial vortex is high enough. The effects of moist convection lead to the enhancement of the outer wall. In comparison, under the influence of the same instability, vortices with an inner wall stronger than the outer one evolve toward monopolar single-eyewall structures.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f43f40d57b574c2996339a943df855cc https://doi.org/10.1063/5.0096554 Zobrazit plný text záznamu